- Offers guaranteed amount level of CPU performance
- Has the ability to burst to high level on spiky loads
- Baseline CPU governed by “CPU Credits”
- “Credits” Accumulate when the instances operate below the base line and vice versa
- Most general application that needs quick access to CPU but most of the time moderate levels of CPU
- 1 CPU credit = 1 vCPU running at 100% for 1 minute.
| Instance Type | Max CPU Credit Balance |
|---|
t3.nano | 72 |
t3.micro | 144 |
t3.small | 288 |
t3.medium | 576 |
t3.large | 864 |
t3.xlarge | 1,152 |
t3.2xlarge | 1,536 |
- T3/T4g Unlimited Mode: Allows instances to burst beyond their baseline even when CPU credits are exhausted — but incurs extra charges.
Usecases
- Many workloads don’t require constant CPU performance all the time.
- Microservices or low-traffic APIs
- Development or staging environments
-
- Web servers with sporadic traffic